Fortunately my 2 Havanese will do their business in the cold (it is 10 right now), however despite us shoveling a big spot in the yard to go the last week or so after we got about 60 inches dumped on us they step out onto the deck and go right then and there and run right back in. At least its not inside so I can't complain, but I have to keep going out there to shovel their little baby poops off the deck and fling it into the yard to await poop pickup day. 10 degrees is not a poop pickup day.